Because you like Neo in The Matrix
Imperator Furiosa is a badass patriarchy toppler. She'll do anything to secure a better, freer future for the women she cares for. See them in Mad Max: Fury Road.
Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.
She's a survivor of gunshots, of being buried alive, nand of paralysis. And now Beatrix Kiddo is going to make her abusers pay. See them in Kill Bill vol. 1.
An underdog with nothing left to lose, Donnie Creed has everything to prove. See them in Creed.
James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.
Daring on a bike but haunted in his personal life, even Johnny Blaze isn't fast enough to outride his past. See them in Ghost Rider.
Stuck somewhere between life and death, Talion is motivated by one thing only: vengeance. See them in Middle-earth: Shadow of Mordor.
They say they saved Adam Jensen by turning him into a cyborg, but he's not sure saved is the right word. See them in Deus Ex Series.
Terence Fletcher is a brutal and unflinchingly strict music teacher hell-bent on whipping his students into shape. See them in Whiplash.
Shaun is used to being lazy. And now, you're asking him to fight for his life? See them in Shaun of the Dead.
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.